FlatWrench vs PriorityStack
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FlatWrench
This app helps automotive technicians track their efficiency on flat-rate jobs. It automatically calculates productivity against an 8-hour workday and provides detailed performance history. Designed for shop environments with features like a dark theme and large touch targets.
- Track flagged hours per job
- Automatic efficiency calculation
- View metrics by pay period
- Complete job history search
- Dark theme for shop use
- Large touch targets
- Secure cloud sync
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Built for flat-rate techs who want to beat the clock. FlatWrench is the essential productivity app for automotive technicians working on flat-rate pay. Stop guessing and start knowing exactly how efficient you are with every job. HOW IT WORKS Enter your flagged hours for each job, and the app automatically calculates your efficiency against an 8-hour workday. See your productivity percentage instantly and track your performance over time. KEY FEATU RES - Track flagged hours for every job - Automatic efficiency calculation based on 8-hour days - View metrics by pay period (1st-15th and 16th-end of month) - Complete job history with easy search - Dark theme designed for shop use - Large touch targets for gloved hands - Secure cloud sync across devices WHY FlatWrench? Most technicians have no idea if they're actually making money until payday. FlatWrench gives you real-time visibility into your productivity, so you can make adjustments before it's too late. SIMPLE PRICING One-time purchase of $3.99. No subscriptions, no hidden fees.
PriorityStack
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PriorityStack uses the Ivy Lee method: each night, write down tomorrow's 6 most important tasks in priority order. Tackle them one at a time. Simple, proven, and life-changing. WHAT YOU CAN DO: • The Ivy Lee Method — rank tomorrow's 6 most important tasks tonight, tackle them one at a time • Daily reflection log with mood and notes • Recurring tasks that auto-populate on the right weekday • Quick-capture inbox for stray ideas before they're lost • Focus sessions with interruption tracking • No sign-up and no account — your stacks stay on your device PRIORITYSTACK PREMIUM — $2.99/month: • Unlimited daily stacks • Full history and analytics • Recurring priorities • Weekly review • Every future update included PERFECT FOR: Productivity enthusiasts, entrepreneurs, busy professionals, and anyone who wants a clear, focused top-6 daily task list based on proven productivity methods. Choose the plan that suits you: monthly, yearly, or a one-time Lifetime purchase that never renews. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel any time in your Apple ID subscription settings. The Lifetime option is a single purchase with no renewal. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://tabishapps.com/privacy-policy.html
Screenshots
Verdict
The clearest difference is price: PriorityStack at Free against FlatWrench's $3.99. FlatWrench's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
PriorityStack is free to download; FlatWrench costs $3.99 up front. PriorityStack sells 1 in-app purchase, starting at $2.99 per month. FlatWrench asks for nothing beyond the download.
FlatWrench ships an update every 10 days, PriorityStack every 2 months. The most recent releases landed on October 1, 2026 and September 18, 2026 respectively.
| Parameter | FlatWrench | PriorityStack |
|---|---|---|
| Price | $3.99 | Free — better |
| Rating | 4.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 10 days — better | Every 2 months |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 34 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | Selden Endes | Tabish Hassan |
In-app purchases
FlatWrench
No in-app purchases
PriorityStack
- PriorityStack Premium Monthly7 Days trial$2.991 Month









